diff --git a/kernel/Kconfig b/kernel/Kconfig
index f5e15ae4..71f4e8c3 100644
--- a/kernel/Kconfig
+++ b/kernel/Kconfig
@@ -4,7 +4,7 @@
 
 config MARS
 	tristate "storage system MARS (EXPERIMENTAL)"
-	depends on BLOCK && PROC_SYSCTL && HIGH_RES_TIMERS
+	depends on BLOCK && PROC_SYSCTL && HIGH_RES_TIMERS && !DEBUG_SLAB && !DEBUG_SG
 	default n
 	---help---
 	Experimental storage System. Only compile as a module!
diff --git a/kernel/mars.h b/kernel/mars.h
index 0f714ef2..5e7ed036 100644
--- a/kernel/mars.h
+++ b/kernel/mars.h
@@ -26,6 +26,13 @@
 #ifndef CONFIG_HIGH_RES_TIMERS
 #error CONFIG_HIGH_RES_TIMERS must be set
 #endif
+#ifdef CONFIG_DEBUG_SLAB
+#error Fixme: CONFIG_DEBUG_SLAB does not work (fix the bio offset calculation)
+#endif
+#ifdef CONFIG_DEBUG_SG
+#error Fixme: CONFIG_DEBUG_SG does not work (fix the bio offset calculation)
+#endif
+
 
 /////////////////////////////////////////////////////////////////////////